1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * S390 version 4 * Copyright IBM Corp. 1999, 2000 5 * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) 6 */ 7 8 #ifndef _UAPI_S390_PTRACE_H 9 #define _UAPI_S390_PTRACE_H 10 11 #include <linux/const.h> 12 13 /* 14 * Offsets in the user_regs_struct. They are used for the ptrace 15 * system call and in entry.S 16 */ 17 #ifndef __s390x__ 18 19 #define PT_PSWMASK 0x00 20 #define PT_PSWADDR 0x04 21 #define PT_GPR0 0x08 22 #define PT_GPR1 0x0C 23 #define PT_GPR2 0x10 24 #define PT_GPR3 0x14 25 #define PT_GPR4 0x18 26 #define PT_GPR5 0x1C 27 #define PT_GPR6 0x20 28 #define PT_GPR7 0x24 29 #define PT_GPR8 0x28 30 #define PT_GPR9 0x2C 31 #define PT_GPR10 0x30 32 #define PT_GPR11 0x34 33 #define PT_GPR12 0x38 34 #define PT_GPR13 0x3C 35 #define PT_GPR14 0x40 36 #define PT_GPR15 0x44 37 #define PT_ACR0 0x48 38 #define PT_ACR1 0x4C 39 #define PT_ACR2 0x50 40 #define PT_ACR3 0x54 41 #define PT_ACR4 0x58 42 #define PT_ACR5 0x5C 43 #define PT_ACR6 0x60 44 #define PT_ACR7 0x64 45 #define PT_ACR8 0x68 46 #define PT_ACR9 0x6C 47 #define PT_ACR10 0x70 48 #define PT_ACR11 0x74 49 #define PT_ACR12 0x78 50 #define PT_ACR13 0x7C 51 #define PT_ACR14 0x80 52 #define PT_ACR15 0x84 53 #define PT_ORIGGPR2 0x88 54 #define PT_FPC 0x90 55 /* 56 * A nasty fact of life that the ptrace api 57 * only supports passing of longs. 58 */ 59 #define PT_FPR0_HI 0x98 60 #define PT_FPR0_LO 0x9C 61 #define PT_FPR1_HI 0xA0 62 #define PT_FPR1_LO 0xA4 63 #define PT_FPR2_HI 0xA8 64 #define PT_FPR2_LO 0xAC 65 #define PT_FPR3_HI 0xB0 66 #define PT_FPR3_LO 0xB4 67 #define PT_FPR4_HI 0xB8 68 #define PT_FPR4_LO 0xBC 69 #define PT_FPR5_HI 0xC0 70 #define PT_FPR5_LO 0xC4 71 #define PT_FPR6_HI 0xC8 72 #define PT_FPR6_LO 0xCC 73 #define PT_FPR7_HI 0xD0 74 #define PT_FPR7_LO 0xD4 75 #define PT_FPR8_HI 0xD8 76 #define PT_FPR8_LO 0XDC 77 #define PT_FPR9_HI 0xE0 78 #define PT_FPR9_LO 0xE4 79 #define PT_FPR10_HI 0xE8 80 #define PT_FPR10_LO 0xEC 81 #define PT_FPR11_HI 0xF0 82 #define PT_FPR11_LO 0xF4 83 #define PT_FPR12_HI 0xF8 84 #define PT_FPR12_LO 0xFC 85 #define PT_FPR13_HI 0x100 86 #define PT_FPR13_LO 0x104 87 #define PT_FPR14_HI 0x108 88 #define PT_FPR14_LO 0x10C 89 #define PT_FPR15_HI 0x110 90 #define PT_FPR15_LO 0x114 91 #define PT_CR_9 0x118 92 #define PT_CR_10 0x11C 93 #define PT_CR_11 0x120 94 #define PT_IEEE_IP 0x13C 95 #define PT_LASTOFF PT_IEEE_IP 96 #define PT_ENDREGS 0x140-1 97 98 #define GPR_SIZE 4 99 #define CR_SIZE 4 100 101 #define STACK_FRAME_OVERHEAD 96 /* size of minimum stack frame */ 102 103 #else /* __s390x__ */ 104 105 #define PT_PSWMASK 0x00 106 #define PT_PSWADDR 0x08 107 #define PT_GPR0 0x10 108 #define PT_GPR1 0x18 109 #define PT_GPR2 0x20 110 #define PT_GPR3 0x28 111 #define PT_GPR4 0x30 112 #define PT_GPR5 0x38 113 #define PT_GPR6 0x40 114 #define PT_GPR7 0x48 115 #define PT_GPR8 0x50 116 #define PT_GPR9 0x58 117 #define PT_GPR10 0x60 118 #define PT_GPR11 0x68 119 #define PT_GPR12 0x70 120 #define PT_GPR13 0x78 121 #define PT_GPR14 0x80 122 #define PT_GPR15 0x88 123 #define PT_ACR0 0x90 124 #define PT_ACR1 0x94 125 #define PT_ACR2 0x98 126 #define PT_ACR3 0x9C 127 #define PT_ACR4 0xA0 128 #define PT_ACR5 0xA4 129 #define PT_ACR6 0xA8 130 #define PT_ACR7 0xAC 131 #define PT_ACR8 0xB0 132 #define PT_ACR9 0xB4 133 #define PT_ACR10 0xB8 134 #define PT_ACR11 0xBC 135 #define PT_ACR12 0xC0 136 #define PT_ACR13 0xC4 137 #define PT_ACR14 0xC8 138 #define PT_ACR15 0xCC 139 #define PT_ORIGGPR2 0xD0 140 #define PT_FPC 0xD8 141 #define PT_FPR0 0xE0 142 #define PT_FPR1 0xE8 143 #define PT_FPR2 0xF0 144 #define PT_FPR3 0xF8 145 #define PT_FPR4 0x100 146 #define PT_FPR5 0x108 147 #define PT_FPR6 0x110 148 #define PT_FPR7 0x118 149 #define PT_FPR8 0x120 150 #define PT_FPR9 0x128 151 #define PT_FPR10 0x130 152 #define PT_FPR11 0x138 153 #define PT_FPR12 0x140 154 #define PT_FPR13 0x148 155 #define PT_FPR14 0x150 156 #define PT_FPR15 0x158 157 #define PT_CR_9 0x160 158 #define PT_CR_10 0x168 159 #define PT_CR_11 0x170 160 #define PT_IEEE_IP 0x1A8 161 #define PT_LASTOFF PT_IEEE_IP 162 #define PT_ENDREGS 0x1B0-1 163 164 #define GPR_SIZE 8 165 #define CR_SIZE 8 166 167 #define STACK_FRAME_OVERHEAD 160 /* size of minimum stack frame */ 168 169 #endif /* __s390x__ */ 170 171 #ifndef __s390x__ 172 173 #define PSW_MASK_PER _AC(0x40000000, UL) 174 #define PSW_MASK_DAT _AC(0x04000000, UL) 175 #define PSW_MASK_IO _AC(0x02000000, UL) 176 #define PSW_MASK_EXT _AC(0x01000000, UL) 177 #define PSW_MASK_KEY _AC(0x00F00000, UL) 178 #define PSW_MASK_BASE _AC(0x00080000, UL) /* always one */ 179 #define PSW_MASK_MCHECK _AC(0x00040000, UL) 180 #define PSW_MASK_WAIT _AC(0x00020000, UL) 181 #define PSW_MASK_PSTATE _AC(0x00010000, UL) 182 #define PSW_MASK_ASC _AC(0x0000C000, UL) 183 #define PSW_MASK_CC _AC(0x00003000, UL) 184 #define PSW_MASK_PM _AC(0x00000F00, UL) 185 #define PSW_MASK_RI _AC(0x00000000, UL) 186 #define PSW_MASK_EA _AC(0x00000000, UL) 187 #define PSW_MASK_BA _AC(0x00000000, UL) 188 189 #define PSW_MASK_USER _AC(0x0000FF00, UL) 190 191 #define PSW_ADDR_AMODE _AC(0x80000000, UL) 192 #define PSW_ADDR_INSN _AC(0x7FFFFFFF, UL) 193 194 #define PSW_ASC_PRIMARY _AC(0x00000000, UL) 195 #define PSW_ASC_ACCREG _AC(0x00004000, UL) 196 #define PSW_ASC_SECONDARY _AC(0x00008000, UL) 197 #define PSW_ASC_HOME _AC(0x0000C000, UL) 198 199 #else /* __s390x__ */ 200 201 #define PSW_MASK_PER _AC(0x4000000000000000, UL) 202 #define PSW_MASK_DAT _AC(0x0400000000000000, UL) 203 #define PSW_MASK_IO _AC(0x0200000000000000, UL) 204 #define PSW_MASK_EXT _AC(0x0100000000000000, UL) 205 #define PSW_MASK_BASE _AC(0x0000000000000000, UL) 206 #define PSW_MASK_KEY _AC(0x00F0000000000000, UL) 207 #define PSW_MASK_MCHECK _AC(0x0004000000000000, UL) 208 #define PSW_MASK_WAIT _AC(0x0002000000000000, UL) 209 #define PSW_MASK_PSTATE _AC(0x0001000000000000, UL) 210 #define PSW_MASK_ASC _AC(0x0000C00000000000, UL) 211 #define PSW_MASK_CC _AC(0x0000300000000000, UL) 212 #define PSW_MASK_PM _AC(0x00000F0000000000, UL) 213 #define PSW_MASK_RI _AC(0x0000008000000000, UL) 214 #define PSW_MASK_EA _AC(0x0000000100000000, UL) 215 #define PSW_MASK_BA _AC(0x0000000080000000, UL) 216 217 #define PSW_MASK_USER _AC(0x0000FF0180000000, UL) 218 219 #define PSW_ADDR_AMODE _AC(0x0000000000000000, UL) 220 #define PSW_ADDR_INSN _AC(0xFFFFFFFFFFFFFFFF, UL) 221 222 #define PSW_ASC_PRIMARY _AC(0x0000000000000000, UL) 223 #define PSW_ASC_ACCREG _AC(0x0000400000000000, UL) 224 #define PSW_ASC_SECONDARY _AC(0x0000800000000000, UL) 225 #define PSW_ASC_HOME _AC(0x0000C00000000000, UL) 226 227 #endif /* __s390x__ */ 228 229 #define NUM_GPRS 16 230 #define NUM_FPRS 16 231 #define NUM_CRS 16 232 #define NUM_ACRS 16 233 234 #define NUM_CR_WORDS 3 235 236 #define FPR_SIZE 8 237 #define FPC_SIZE 4 238 #define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */ 239 #define ACR_SIZE 4 240 241 242 #define PTRACE_OLDSETOPTIONS 21 243 #define PTRACE_SYSEMU 31 244 #define PTRACE_SYSEMU_SINGLESTEP 32 245 #ifndef __ASSEMBLY__ 246 #include <linux/stddef.h> 247 #include <linux/types.h> 248 249 typedef union { 250 float f; 251 double d; 252 __u64 ui; 253 struct 254 { 255 __u32 hi; 256 __u32 lo; 257 } fp; 258 } freg_t; 259 260 typedef struct { 261 __u32 fpc; 262 __u32 pad; 263 freg_t fprs[NUM_FPRS]; 264 } s390_fp_regs; 265 266 #define FPC_EXCEPTION_MASK 0xF8000000 267 #define FPC_FLAGS_MASK 0x00F80000 268 #define FPC_DXC_MASK 0x0000FF00 269 #define FPC_RM_MASK 0x00000003 270 271 /* this typedef defines how a Program Status Word looks like */ 272 typedef struct { 273 unsigned long mask; 274 unsigned long addr; 275 } __attribute__ ((aligned(8))) psw_t; 276 277 /* 278 * The s390_regs structure is used to define the elf_gregset_t. 279 */ 280 typedef struct { 281 psw_t psw; 282 unsigned long gprs[NUM_GPRS]; 283 unsigned int acrs[NUM_ACRS]; 284 unsigned long orig_gpr2; 285 } s390_regs; 286 287 /* 288 * The user_pt_regs structure exports the beginning of 289 * the in-kernel pt_regs structure to user space. 290 */ 291 typedef struct { 292 unsigned long args[1]; 293 psw_t psw; 294 unsigned long gprs[NUM_GPRS]; 295 } user_pt_regs; 296 297 /* 298 * Now for the user space program event recording (trace) definitions. 299 * The following structures are used only for the ptrace interface, don't 300 * touch or even look at it if you don't want to modify the user-space 301 * ptrace interface. In particular stay away from it for in-kernel PER. 302 */ 303 typedef struct { 304 unsigned long cr[NUM_CR_WORDS]; 305 } per_cr_words; 306 307 #define PER_EM_MASK 0xE8000000UL 308 309 typedef struct { 310 #ifdef __s390x__ 311 unsigned : 32; 312 #endif /* __s390x__ */ 313 unsigned em_branching : 1; 314 unsigned em_instruction_fetch : 1; 315 /* 316 * Switching on storage alteration automatically fixes 317 * the storage alteration event bit in the users std. 318 */ 319 unsigned em_storage_alteration : 1; 320 unsigned em_gpr_alt_unused : 1; 321 unsigned em_store_real_address : 1; 322 unsigned : 3; 323 unsigned branch_addr_ctl : 1; 324 unsigned : 1; 325 unsigned storage_alt_space_ctl : 1; 326 unsigned : 21; 327 unsigned long starting_addr; 328 unsigned long ending_addr; 329 } per_cr_bits; 330 331 typedef struct { 332 unsigned short perc_atmid; 333 unsigned long address; 334 unsigned char access_id; 335 } per_lowcore_words; 336 337 typedef struct { 338 unsigned perc_branching : 1; 339 unsigned perc_instruction_fetch : 1; 340 unsigned perc_storage_alteration : 1; 341 unsigned perc_gpr_alt_unused : 1; 342 unsigned perc_store_real_address : 1; 343 unsigned : 3; 344 unsigned atmid_psw_bit_31 : 1; 345 unsigned atmid_validity_bit : 1; 346 unsigned atmid_psw_bit_32 : 1; 347 unsigned atmid_psw_bit_5 : 1; 348 unsigned atmid_psw_bit_16 : 1; 349 unsigned atmid_psw_bit_17 : 1; 350 unsigned si : 2; 351 unsigned long address; 352 unsigned : 4; 353 unsigned access_id : 4; 354 } per_lowcore_bits; 355 356 typedef struct { 357 union { 358 per_cr_words words; 359 per_cr_bits bits; 360 } control_regs; 361 /* 362 * The single_step and instruction_fetch bits are obsolete, 363 * the kernel always sets them to zero. To enable single 364 * stepping use ptrace(PTRACE_SINGLESTEP) instead. 365 */ 366 unsigned single_step : 1; 367 unsigned instruction_fetch : 1; 368 unsigned : 30; 369 /* 370 * These addresses are copied into cr10 & cr11 if single 371 * stepping is switched off 372 */ 373 unsigned long starting_addr; 374 unsigned long ending_addr; 375 union { 376 per_lowcore_words words; 377 per_lowcore_bits bits; 378 } lowcore; 379 } per_struct; 380 381 typedef struct { 382 unsigned int len; 383 unsigned long kernel_addr; 384 unsigned long process_addr; 385 } ptrace_area; 386 387 /* 388 * S/390 specific non posix ptrace requests. I chose unusual values so 389 * they are unlikely to clash with future ptrace definitions. 390 */ 391 #define PTRACE_PEEKUSR_AREA 0x5000 392 #define PTRACE_POKEUSR_AREA 0x5001 393 #define PTRACE_PEEKTEXT_AREA 0x5002 394 #define PTRACE_PEEKDATA_AREA 0x5003 395 #define PTRACE_POKETEXT_AREA 0x5004 396 #define PTRACE_POKEDATA_AREA 0x5005 397 #define PTRACE_GET_LAST_BREAK 0x5006 398 #define PTRACE_PEEK_SYSTEM_CALL 0x5007 399 #define PTRACE_POKE_SYSTEM_CALL 0x5008 400 #define PTRACE_ENABLE_TE 0x5009 401 #define PTRACE_DISABLE_TE 0x5010 402 #define PTRACE_TE_ABORT_RAND 0x5011 403 404 /* 405 * The numbers chosen here are somewhat arbitrary but absolutely MUST 406 * not overlap with any of the number assigned in <linux/ptrace.h>. 407 */ 408 #define PTRACE_SINGLEBLOCK 12 /* resume execution until next branch */ 409 410 /* 411 * PT_PROT definition is loosely based on hppa bsd definition in 412 * gdb/hppab-nat.c 413 */ 414 #define PTRACE_PROT 21 415 416 typedef enum { 417 ptprot_set_access_watchpoint, 418 ptprot_set_write_watchpoint, 419 ptprot_disable_watchpoint 420 } ptprot_flags; 421 422 typedef struct { 423 unsigned long lowaddr; 424 unsigned long hiaddr; 425 ptprot_flags prot; 426 } ptprot_area; 427 428 /* Sequence of bytes for breakpoint illegal instruction. */ 429 #define S390_BREAKPOINT {0x0,0x1} 430 #define S390_BREAKPOINT_U16 ((__u16)0x0001) 431 #define S390_SYSCALL_OPCODE ((__u16)0x0a00) 432 #define S390_SYSCALL_SIZE 2 433 434 /* 435 * The user_regs_struct defines the way the user registers are 436 * store on the stack for signal handling. 437 */ 438 struct user_regs_struct { 439 psw_t psw; 440 unsigned long gprs[NUM_GPRS]; 441 unsigned int acrs[NUM_ACRS]; 442 unsigned long orig_gpr2; 443 s390_fp_regs fp_regs; 444 /* 445 * These per registers are in here so that gdb can modify them 446 * itself as there is no "official" ptrace interface for hardware 447 * watchpoints. This is the way intel does it. 448 */ 449 per_struct per_info; 450 unsigned long ieee_instruction_pointer; /* obsolete, always 0 */ 451 }; 452 453 #endif /* __ASSEMBLY__ */ 454 455 #endif /* _UAPI_S390_PTRACE_H */ 456
